• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bioenergy research >First-Rotation Yields of 30 Short-Rotation Willow Cultivars in Central Saskatchewan, Canada
【24h】

First-Rotation Yields of 30 Short-Rotation Willow Cultivars in Central Saskatchewan, Canada

机译：加拿大萨斯喀彻温省中部30个短旋柳品种的首次轮换产量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Government of Saskatchewan is evaluating whether biomass crops can be successfully used as an affordable, reliable, and environmentally sustainable bioenergy source. The objective of this study was to determine the first 3-year-rotation biomass yields of 30 willow cultivars planted in central Saskatchewan. Annual willow morphological data were collected throughout the first rotation, and stem biomass equations were developed. A willow yield map was produced for the SV1 cultivar across climates and soils of Saskatchewan. The majority of willow biomass equations were with high R2 values (>0.90), and there was a strong agreement between equation-derived yield and harvested biomass (RMSE = 13.6 %; bias = -3.3 %). The average diameter, height, and stem count of 3-year-old stems were 14.1 (standard deviation (SD) =1.7) mm, 304.7 (SD = 45.4) cm, and 8.7 (SD = 1.8), respectively. The average first-rotation harvested yield was 10.5 (SD = 3.3) Mg ha−1, and the average survival rate was 81 %. Simulated SV1 productivity was 13.6 and 11.8 Mg ha−1 across marginal agricultural lands of the Prairies (1.7 million ha) and Boreal Plains (0.4 million ha) ecozones, respectively. Low growing degree days, heavy clay soils, low nitrogen availability, and winter stem dieback at these northern latitudes were the main factors to influence willow production at relatively lower yields observed in this study. Based on first-rotation results, the Tully Champion cultivar had the highest potential to be utilized as biomass feedstock in Saskatchewan, producing 17.4 Mg ha−1, which was 70 % greater biomass than the average yield of the other 29 cultivars. The use of willow as a bioenergy source appears promising, but further research is needed.
机译：萨斯喀彻温省政府正在评估生物量作物能否成功用作负担得起的，可靠的和环境可持续的生物能源。这项研究的目的是确定在萨斯喀彻温省中部种植的30个柳树品种的前三年轮换生物量产量。在第一轮旋转中收集了年度柳树形态数据，并建立了茎生物量方程。在萨斯喀彻温省的气候和土壤上绘制了SV1品种的柳树产量图。大部分柳树生物量方程具有较高的R2值（> 0.90），并且方程衍生的产量与收获的生物量之间有很强的一致性（RMSE = 13.6％; bias = -3.3％）。 3岁茎的平均直径，高度和茎数分别为14.1（标准差（SD）= 1.7）mm，304.7（SD = 45.4）cm和8.7（SD = 1.8）。第一轮收获的平均产量为10.5（SD = 3.3）Mg ha-1，平均成活率为81％。在大草原（170万公顷）和北方平原（40万公顷）生态区的边缘农业土地上，模拟​​的SV1生产率分别为13.6和11.8 Mg ha-1。在本研究中观察到的低生长天数，浓厚的粘土土壤，低氮素利用和这些北纬的冬季茎枯死是影响柳树产量相对较低的主要因素。根据首次轮换结果，塔利冠军品种在萨斯喀彻温省具有最大的潜力被用作生物质原料，产生17.4 Mg ha-1，这比其他29个品种的平均产量高70％。柳树作为生物能源的应用看来是有希望的，但是还需要进一步的研究。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号